[Openstack-stable-maint] Stable check of openstack/oslo.messaging for ref refs/heads/stable/train failed

Build failed. https://zuul.opendev.org/t/openstack/buildset/70e55b361c0146218c6b5c6f95e68e... - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/945423c900e54b2e8e166b3a3fa26b06 : SUCCESS in 4m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/24d429047bb6439f86753eb57eff2bd6 : SUCCESS in 4m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/32640e8dbd484e51acea11b3c341d01a : SUCCESS in 4m 23s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/2a4366c331a1475caf5d9d16b54fc357 : FAILURE in 3m 57s